2 options. Using the Smart Dimension command, pick your two corners (must get the endpoint indicator for both) and before you place the dimension, hold down the Shift key. Using the Dimension Between command, change the Orientation option on the ribbon bar to "By 2 Points" and select your two corners (must get the endpoint indicator for both). -- PellaKen http://grundey.blogspot.com "Marty Erkamp" wrote in message news:firstname.lastname@example.org... > > How do I create a diagonal dimension? For example, how would I dimension > the diagonal > distance from the lower left hand corner of a rectangle to the upper right > hand > corner? > Marty E.